Ring



FIG. 1 is a perspective view of a ring showing a pair of spaced rotatable annular members separated by cylindrical bearings;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a rear view thereof.

The broken lines are for purposes of illustration only and form no part of the claimed design. 

The ornamental design for a ring, as shown and described. 